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SI-Metric Kids by ButterflyVista

This program is a graphical easy-to-use US to metric unit converter ideal from everything from cooking to engineering. The product also features an extensive timezone database with both city and country lookup. Don't think of SI-Metric as a mere calculator, because the product includes an encyclopedia providing detailed history and origins of the units and time zones. Let SI-Metric help you with your unit or time zone conversions.

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UnitStar by Tao Yue

Award-winning unit conversion program. Hundreds of units are included, along with detailed descriptions giving the history and definitions of units. Features include conversion tables, adjustable number of decimal places, and conversion formulas. Users can even add their own units by editing the ASCII data file. UnitStar is an indispensible tool for science, industry, education, travel, and simple curiosity.

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